Helium leak test

Process-reliable

Helium leak test

Process-reliable leak testing in series production

Reliably detect and localize leaks with a helium leak tester

Helium leak test systems were first used in 1942 as part of the so-called Manhattan Project. This was the birth of helium leak test. Today, helium leak testers are among the most established and accurate methods of leak testing in series production and in the laboratory. In addition to helium leak testing in a vacuum, which requires a high vacuum in the mass spectrometer, helium leak testing under atmosphere using helium sensors is now also used.

For the helium leak test in a vacuum, the detection limit of a mass spectrometer is 10−12 mbar ⋅ l / s. Typical leak testing systems work in the range between 10−3 – 10−7 mbar ⋅ l / s. For the helium leak test in atmosphere, the detection limit of the sensor is 10−6 mbar ⋅ l / s. Typical leak testing systems work in this range between 10−2 – 10−4 mbar ⋅ l / s.

Both leak tests can be fully automated. An automated leak detection system can either be fully automated by means of robot handling or the parts handling is carried out manually by the worker. In both cases, the leak test is always automated.

✓ Automotive industry (fuel tanks, fuel lines and pumps, airbag igniters, etc.)
✓ Packaging industry (plastic containers for food and crop protection)
✓ Vacuum technology
✓ Electronics (lamps, fluorescent tubes, flat screens, etc.)
✓ Medical technology (pacemaker, catheter)

Your benefits at a glance:

Areas of application

The helium leak test is ideally suited to check filler pipes or fuel tanks with filler pipe for leaks. It is an objective, reliable and dry leak test. The dry leak test method avoids additional work steps and prevents the components from being wetted with water. Furthermore, the helium leak test can also be used for the smallest leak rates.
The helium leak test is very suitable for checking components of the exhaust system for leaks. The dry test method tests the components objectively and with a short cycle time with high precision.
The helium test as a dry method is ideal for checking fuel rails for leaks. The strips are tested at high pressures of > 200 bar and a relatively low permissible leakage rate. An efficient helium recovery system completes the device.
The precise inspection of gearbox housings and mounted gearboxes for leaks is becoming increasingly important. While in the past cast aluminum housings were often tested using the differential pressure method, today’s test specifications require a more precise method. Helium is ideal here because it enables a dry and very precise test method.
The helium leak test is ideally suited to test SCR tanks for leaks. This is an objective, reliable and dry leak test. The dry leak test method avoids additional work steps and prevents the components from being wetted with water. It is also possible to equip the helium leak test system with a helium recovery system in order to reduce the costs for the test gas helium.
The helium leak test under vacuum for fuel tanks can be completely automated and, if required, can be optionally equipped with a helium recovery system in order to reduce the operating costs for the test gas.
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